deploytool: Add README.md, migrate docs to it.

deploytool/cmd/path.go

Index: deploytool/cmd/path.go
diff --git a/deploytool/cmd/path.go b/deploytool/cmd/path.go
deleted file mode 100644
index 5f697f5cc5ac185a8577915fd6c18216f5013bbf..0000000000000000000000000000000000000000
--- a/deploytool/cmd/path.go
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright 2016 The LUCI Authors. All rights reserved.
-// Use of this source code is governed under the Apache License, Version 2.0
-// that can be found in the LICENSE file.
-
-package main
-
-import (
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"github.com/luci/luci-go/common/errors"
-)
-
-const (
-	// configExt is the configuration file extension.
-	configExt = ".cfg"
-)
-
-func splitSourceRelativePath(path string) []string {
-	return strings.Split(path, "/")
-}
-
-// deployToNative converts the depoy tool path, path, to a native path.
-//
-// base is a native base path to prepend to the generated path. If empty, the
-// returned path will be relative.
-func deployToNative(base, path string) string {
-	parts := splitSourceRelativePath(path)
-	path = filepath.Join(parts...)
-	if base != "" {
-		path = filepath.Join(base, path)
-	}
-	return path
-}
-
-// deployDirname returns the directory name of the source-relative path.
-func deployDirname(path string) string {
-	if idx := strings.LastIndex(path, "/"); idx >= 0 {
-		return path[:idx]
-	}
-	return ""
-}
-
-func isHidden(path string) bool {
-	return strings.HasPrefix(filepath.Base(path), ".")
-}
-
-func fileURLToPath(path string) string {
-	if filepath.Separator == '/' {
-		return path
-	}
-	return strings.Replace(path, "/", string(filepath.Separator), -1)
-}
-
-func withTempDir(f func(string) error) error {
-	// Create a temporary directory.
-	tdir, err := ioutil.TempDir("", "luci_deploytool")
-	if err != nil {
-		return errors.Annotate(err).Reason("failed to create tempdir").Err()
-	}
-	defer os.RemoveAll(tdir)
-
-	return f(tdir)
-}